There has been much discussion here on 1.5T vs 1.8 maintenance cost and also worries about the cost of maintaining a turbo engine.
Let's see the facts as stated in our Quick Guide Manual pages 18-21.
Below is the schedule for parts replacement. It is
the same for both 1.5T & 1.8 except that 1.5T follows the Maintenance Minder for Engine Oil & Oil Filter:-
1. Engine Oil - every 10,000 km or 6 months
2. Oil Filter - every 20,000 km or 12 months
3. Air Filter - every 30,000 km or 1.5 years
4. Dust Filter - every 30,000 km or 1.5 years
5. CVT Fluid - every 40,000 km or 2 years
6. Brake Fluid - every 60,000 km or 3 years
7. Iridium Spark Plugs - every 100,000 km or 5 years
8. Fuel Filter - every 110,000 km or 5.5 years
9. Engine Coolant - every 200,000 km or 10 years.
Other facts on 1.5T vs 1.8:
- 1.5T lower fuel consumption
- 1.5T lower road tax (RM90 only)
- 1.8 lower insurance premium
- 1.8 cheaper tyre replacement cost.
Now you can make an informed decision.
To me, the turbo would most probably be
only slightly more than the non-turbo in terms of maintenance costs.
Depending on the driving style, the turbo could even be cheaper from fuel savings.
And looking at the maintenance schedule above, the frequency of parts replacement is very low. Turbo looks affordable to me.

See turbo gauge spooling, forgot maintenance cost liao.